designed to trickAttack.Phishingvictims into downloading credential-stealing malware and other threats . Detailed by researchers at Barracuda Networks , the invoice impersonation attacks aim to persuadeAttack.Phishingthe victim that the messages are from trusted sources , or to act on impulse -- planting the idea that the target has lost money is a common tactic in phishing emails , as it creates panic for the user . The victim thinks they are reacting to an important request when all they 're doing is playing right into the hands of the attackers . A new wave of these attacksAttack.Phishinginvolves attackers sendingAttack.Phishingstatus updates for invoices -- but these do n't just involve threat actors firing off millions of messages at random and hoping for the best ; they 're specially crafting the attacksAttack.Phishingto look authentic and crucially , from someone the target might trust . In one example of this attackAttack.Phishing, the target receivesAttack.Phishingan email asking for a reply to a query about the payment status of an invoice . A legitimate-looking invoice number is provided in the subject line and the sender 's name is chosen to beAttack.Phishingsomeone the recipient knows . MimickingAttack.Phishingsomeone the victim knows suggests the attackers are already familiar with the target and their network -- this information could simply have been scraped from a public profile such as LinkedIn or it could indicate that the attackers already have a foothold in the network which they 're looking to exploit for further gains . The message might look legitimate at first glance -- especially for someone quickly scanning emails in a high-paced financial environment -- but the invitation to click on a link to respond to the supposed status should be treated with suspicion . But if a recipient does click through , the link will download a Word document supposedly containing the invoice -- which then goes onto install malware onto the system . It could be subtle , like a trojan or the victim could recognise their error immediately if faced with ransomware . The attackers are n't just using a single template in the campaign , researchers have spotted other lures used in an effort to distribute a malicious payload . A second invoice impersonation attack uses the subject 'My current address update ' and claims to containAttack.Phishinginformation from a trusted contact about a change of address , along with details of a new invoice . Once again , the victim is encouragedAttack.Phishingto click through a link to download the document from a malicious host with the end result again being an infection with malware , credential theft or a compromised account . The attacks might seem simple , but those behind them would n't be deploying them if they did n't work . `` Impersonation is a proven tactic that criminals are regularly using to attractAttack.Phishingvictims into believing that they are acting on an important message , when that could n't be further from the truth , '' said Lior Gavish , VP at Barracuda Networks . When it comes to protection against this type of attack , employee training can go a long way , especially if they 're provided with a sandbox environment .